Test ( b3test_dwz_buildidfull ) sometimes just fails. ( Linux x86_64 )

[Arniiiii]

O3, Without LTO

I have 24 cores, so it may be the reason: something does something before something else.

I've literally got it once, then tried like 7 times to recompile and test to get this fail again.

I couldn't get it by just rerunning tests, only via full rebuild + test.

Failed test-suite.log :

=====================================================
   package-unused version-unused: ./test-suite.log
=====================================================

# TOTAL: 44
# PASS:  43
# SKIP:  0
# XFAIL: 0
# FAIL:  1
# XPASS: 0
# ERROR: 0

System information (uname -a): Linux 6.12.16-gentoo-dist #1 SMP PREEMPT_DYNAMIC Fri Feb 28 20:04:52 -00 2025 x86_64 13th Gen Intel(R) Core(TM) i7-13700HX GenuineIntel
Distribution information (/etc/os-release):
NAME=Gentoo
ID=gentoo
PRETTY_NAME="Gentoo Linux"
ANSI_COLOR="1;32"
HOME_URL="https://www.gentoo.org/"
SUPPORT_URL="https://www.gentoo.org/support/"
BUG_REPORT_URL="https://bugs.gentoo.org/"
VERSION_ID="2.17"

.. contents:: :depth: 2

FAIL: b3test_dwz_buildidfull
============================

executable file is not ELF
test2: [0]: missing file name or function name
test3: [0]: missing file name or function name
test3: [0]: NULL syminfo name
test3: [1]: NULL syminfo name
test3: [2]: NULL syminfo name
test4: [0]: missing file name or function name
test5: NULL syminfo name
FAIL: backtrace_full noinline
FAIL: backtrace_full inline
FAIL: backtrace_simple noinline
FAIL: backtrace_simple inline
FAIL: backtrace_syminfo variable
FAIL b3test_dwz_buildidfull (exit status: 1)

error: getcwd() failed with errno 2/No such file or directory
error: Could not determine current working directory. Is your locale set correctly?

It seems this was also hit here:
#135